#!/usr/bin/env python
#coding=utf-8
#author=xiaomayi0323
#date=2009/03/26
#filename=4-9

a = 10
b = 10
c = 100
d = 100
e = 10.1
f = 10.1

print a is b
print c is d 
print e is f
print id(e) == id(f)
print id(a) == id(b)